Optical cabinet



S. W. WOODHULL.

OPTICAL CABINET.

APPLICATION FILED mm 9, 1919.

1 ,353,372. v Patented Sept. 21, 1920.

INVENTOR.

A; Wmoalhull ATTORNEY.

UNITED WW FF C SERENQ w. woonnunn, or NEWPORT, nHonr. ISLAND.

OPTICAL CAB N T.

0 all whomz't may concern:

Be it known that I, SERENO W. WOOD- HULL, a, citizen of the United States, residing at Newport, in the county of Newport and State of Rhode Island, have invented certain new and useful Improvements in Optical Cabinets, of which the following is a specification. 2 I

My invention relates to optical cabinets foruse by optometrists in making the various tests of eyes necessary to determine-the kind of eye .glasses needed.

The object is to provide a device of this character, of neat and compact construction, adapted to give astigmatic tests, muscle tests, color tests, reading tests, etc., and to do. so by the use of a single light, so arranged that when the light is thrown upon any one of the testing devices it is cut off from all the others. I

description. I

A leadlng feature of the invention consists in a cabinet adapted to receive andto expose to view various testing devices for the eyes, 1n combination with a llght and cooperating screen located in suitable proximity to said devices, and adjustable to different positions to throw thelight upon said testing devices, one at a time, and while throwing the lightupon any one of the devices, to cut it others.

The invention consists in certain novel features of construction and arrangement of parts, as will be herelnafter descrlbed and claimed, reference beinghad to the-accompanying drawings," 1n which, Figure 1 1s a front elevation" of my improvement, withthe astigmatic dial inserted ready to make a test for astigmatis nip V g V Fig. 2 is a side elevation of Fig. 1, with the operatingbands and wheels'removed for clearness; and wlth the arrangement of certain parts inside the cabinet indicated in-d o'tf tedclines; and, :I

Fig. 34s; a plan viewof the light and screen therefor. I v

The numeral 1 indicates the cabinet, whic is, for the most part, open on the front: side, a but is provided on said side with the narrow panels 2 and 3, the latter being at the 'lower front side-of the cabinet.

The cabinet is also provided with thje bottom hand a lid 5 at the top hinged'to theback of thecabinetby the hinges .6; and a will appear in the subjoined off, or screen it, from all the rear of the cabinet, in the sameplane with the top of the panel 2. 1

Immediately behind the panel 2 isthe Specification of Letters Patent. Patented Sept. 21, 1920. l Application filed June 9, 1919.. .Serial'No. 302,835. I

a partial horizontal partition? located in the lighting arrangement. 8 more fully. -illustrated in Fig. 3, which arrangement consists of the bulb 9 carried by the electric light socket 10 and supported in a reflector or screen 11, said socket having a .cord 12 for connection with the electric supply. Y

r The screen or. reflector 11 is provided with 9 an opening in one of its ends forrthe' easy reception of the light socket 10, and at its other end has a band wheel 12carried on a end forremovable connection with the screen on the innerside of its end adjacent the .or reflector 11. The reflector 11 "is also provided on its edges with curved lips 11, and 1 p band wheel 12 with a short tube adapted-Ito loosely receive the inner end of the bulb 291- to support the same in the reflector.

The enlarged portion 10* "of the light? socket'is snugly received into an opening 15 (shown in dotted lines) in the sideof the cabinet, so that the socket 10 carrying the' bulb 9 is usually preferably held against rotation inthe cabinet. The'lstem 13 'atz'the other end of the reflector isrotatably krelines in the side of the cabinetand as this ceived into an opening 16 shown in dotted stem is rigidly connected withv the reffector 11,. it' follows that when the wheel 12-is-r0f .ta-ted, the reflector is rotated around' the bulb 9. 1

The panel 2 is provided its center with a diminutive opening 17, and onwopposite sides of this opening and in 'alineinent therewith are' two other larger openings 18".and

19, shown in dotted lines. :-.These' -'last. two.

openings are provided onthe outside of the I.

panel with swinging covers, and are i also Y covered at the inside of the panel with" col ored glass, preferably let 'into the panel flush used with the opening 19 green. 1 avided with an octagonal drum'20 which may be formed of woodor tin." This'drum. is-

1-06, with'theinner face thereof; The glass used" with'the opening18 is usually red, and that with grooves or recesses 21 for receiving-and holdingthe cards containing the slnglel-mes off test letters. The "cards .are inserted: into these grooves 01' recesses'from thei'rear aside.

.net.

of the cabinet through a door or opening 22 shown in dotted lines inFig. 2.

The drum 2O is mounted'on'a'n axle 23 having bearings in opposite sides of the cabi At the right end of this axle on"the outside of the cabinet is a notched wheel 24 having a cooperating springpawl 25 for engaging said notches as the wheel is rotated,'.

the notches and pawl being so constructed that" the wheel may he rotated either back Ward or forward, and are soarranged andi 7 related to each other and to thefaces f the octagon that whenever one of the notches is engaged the pawhone of the faces'of the octagon will be in a verticalposition' facing forwardly.

On the outer end of the drum axle 23 is a band Wheel 26.

' in the cabinet.

The upper portion of the cabinet, is provided with. atest card 27 .(shown' in dotted lines in Fig. 2). containing different sizes of type, and adaptedto remain permanently The-cabinet is provided on opposite sides in front of the test card 27, with vertical grooves 28 adapted to removably receive the frame 29 carrying the astigmatic dial 30, so that that dial can beset intothe cabinet'in front of the test typecard 27, as shownin Fig; 1', whenever it is desired tomake 'a' test for astigmatism.

The frame 29 is'also provided with suit able grooves for the easy insertion or removal ofthe .astigmatic dial, or. of any 'other dial' or test card that it may be desirable to use; v The upper portion of the 'cabinetnear' its 7 .toprand in front of the test type card and astigmatio dial, is provided with a mirror 31 mounted in a frame 32, hinged at 83, said I frame having an upwardly extending slot- 7 tedolug' 34 cooperating with a setscrew 35',

whereby the mirror 81 may' besetin adjust? ted. positions to suitablyreflect the light from the bulb 9 upon the'astigmatic dial to evenly illuminate the face of said dial.

, The'panel'3fatithe lower front side of; the

1 cabinetis provided at its upper edge with an-inwardly inclined} section-3 extending into close proximity to the octagonal drum 20, the space between the panel section 3" V andthepanel' 2' being ofonly' suflicientwidth to expose the faces of the octagonal drum to view,-one ata time. 1 V a a i .The-band' wheels'l2 and 26 are provided with bands 36 and 37 respectively, which bands may bepassed over suitable shives'or gu-i'deways (not shown) to lead to any'poi'nt rr-0m which theoptometristmayJdesire to operatethe d'evice." When desired, the device may, ofclou rse, be operated by simply V itaking hold of'the wheels 12 and 26 betw'een.

the thumb and'finger and suitably rotating them. i

The 13' if desired, be also pro-V j vided with a pawl and ratchet arrangement into the shorttube 14%. The shaft 13 carrying the band wheel 12 is passed through the other side of the cabinet and screwed into rigid engagement with the" other'end of the reflector inali'neni'ent with the short tube-'14. The octagonal drum 20 is=passedinto the-cabinctthrough the door 22 at the rear side thereof; This door-also provides a con-.-

venient means'for theinserti'on andremova1 Y of the single line test cards carriedlupon the faces of the drum; By raiSin'g the dfoori 5, the frame 29 carrying the astigmatic .dia'l 30 may be passed down into the cabinet through the vertical grOOVesQ/ES-"in'the oppo site sides thereof, in front of the test type card 27 which is permanentlylo'c'atedjiist'in the rear of said grooves 28'." Vhen the: astigmatic dial isremoved, the test 'ty pe card is o place, so to speak.

As to the operation of" my device, His only necessary to add to the foregoing-that when the wheel12'is rotated;the refiector or screen 11 rotates with it around the bulb 9, causingthe' light from said bulb' to always V shine only in the direction of theopen side of the reflector, and screening" oricuttingit off from shinmgm any other direction; so-

. that when it is desired to make a muscle test through the diminutive opening 17in. the panel 2, or color test through the larger openings 18 and-19 in said panel, the

reflector is turned with itsiopen side facing forwardly, thus permittingthe light fromthe bulb to shine directly out through said openings.v :To display the colors-tests one at a'time When desired, tl1e=swinging-covers 18"" and 19 far'e suitablyjremoved from over their respective openings. Whenit is'desired to, use the astigmatic dial 30 on the position the light from" the bulb will: also course exposed totview, or, seen-iii itstest type:card-27,'theireflector 11 is-turned' in the; position illustrated in Figs 2'; with its open side toward saidz'pa'rtsg in whichfall uponathe' mirror 31 a-tthe-top-of the I I cabinet, and by meansofthe lug' 34 and-the I set screw 35 the m-ir'ror can be -adjusted to; 120.

evenly distribute the light over the I face of whichever one of said parts is being used.

Vhen it is desired to throw the light upon" the'single line test card's" carried bythe octagonal drum, the reflector is turned till its open side faces toward the forward face of; the drum", whichwill causethe light to shinebrightly upon this face, so that accordingto" the-illustration in Fig. 1, the letters T would be clearly displayed.

;In this connectiom -special attention is called to the fact that the parts of my apparatus are all so arranged relatively to Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a device of the character described, a cabinet having testing devices for the eyes; a light in proximity to said devices; and means for directing the light toward any desired one of said devices while screening it from shining on the others.

2. In a device of the character described, a cabinet having testing devices for the eyes; a light intermediate said devices; and a screen having an open side adapted to rotate around said light, to direct the light on any desired one of said devices while simultaneously screening it from shining on the others.

3. In a device of the character described, a cabinet having alight; testing devices for the eyes in front of said light and above the same rearwardly thereof; means for directing the light toward either one of said test- 7 ing devices as may be desired; and an adjustable mirror for cooperating with the light when the same is directed, upwardly and rea-rwardly toward said upper testing device to evenly distribute thelight over the same, said mirror being above said testing device. 7

4. A device of the character described, comprising testing devices for the eyes; means for holding said devices in position to be seen;'a light supported adjacent said devices; means for turning the light on any desired one of said devices and for simultaneously therewith cutting it off from the others.

5. Ina device of the character described,

a cabinet having a light; testing devices for the eyes in front of said light and at the side thereof; means for directing the light toward either one of said testing devices'as may be desired; and an ELClJllStZtblG, mlrror for cooperating with the light when the same is directed toward said testing device at the side of saidlight, said mirror and light being at opposite sides of said latter testing device, whereby to evenly distribute 1 the light over the same.

6. In a device of the characterdescribed,

.a cabinet having a light; testing devices for the eyes in front of said'light and above and below the same at the, rear thereof;

means for directing the light toward any.

one of said testing devices and for simultaneously therewith screening it from the" others.

.7. In a device of the character described,

a cabinet having testing devices'for the eyes; a light intermediate said devices, one

of said devices comprising a rotatable drumat one side of said light to the rear thereof, and adapted to carry test cards spaced from each other around'the drum; and a screen, having an open side, adapted to rotate around said light to cause'the light to shine inany one direction desired while screening it from shining in'anyqother direction;

8. In a deviceof the character described,

a cabinet having an. elongated horizontal light therein; testingdevices for the eyes in front of said light and above and below the zontal screen, having an open side, adapted to rotate around said light to screen any dethe will ofthe operator; and an adjustable mirror above the upper oneofsaid testing" I devices adapted to cooperatewith' the light to evenly distribute light over said upper" testing device; p v

In testimony whereof I aifiX my signature.

SERENO W..WOODHULL.

80 same at the rear thereof, the lower testing I devices be ng on a-- rotatable drum; a hon- 

